Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808108 | Method and apparatus for the heat treatment of fine-grained material | Peter Tiggesbaumker, Manfred Durr, Jurgen Wurr, Karl Krutzner, Wolfgang Rother +4 more | 1989-02-28 |
| 4539782 | Silo for loose material in powder form | Norbert Ahrens, Otto Heinemann, Wolfgang Kluger | 1985-09-10 |
| 4364665 | Storage and mixing silo for bulk material | Norbert Ahrens | 1982-12-21 |